The guerilla statue was first placed by the artist over night at Rödingsmarkt in the city, removed by the authorities and years later and positioned on a new place at Großneumarkt. The artist is anonymous. He choosed the world most common first and surnames.

More about the artist in German:

https://urbanshit.de/dreistigkeit-ist-das-stichwort-guerilla-bronzestatue-von-mohamed-smith-in-hamburg/